The mystery of the round rocks
By: by Mark Meierhenry and David Volk ; illustrated by Jason Folkerts.
Contributors: Volk, David, 1947-
Publisher: South Dakota State Historical Society Press
Published: 2007
Place of publication: Pierre, S.D
Language: eng
ISBN-13: 9780977795536
Subjects: Glacial epoch -- Juvenile literature; Glacial erosion -- Juvenile literature; Rocks -- Juvenile literature
Genres: Juvenile literature.